The Northern Territory government has scrapped plans for a multi-million-dollar Aboriginal and Torres Strait Islander Art Gallery of Australia in Alice Springs, after nine years of back and forth.

Last week, NT infrastructure minister Bill Yan gave his federal counterpart Catherine King an ultimatum to approve his government's downsized plans for the gallery or it wouldn't go ahead.

Ms King said she refused to be forced into a decision on the project.

Mr Yan told ABC Alice Springs on Tuesday the federal Labor government were not serious about delivering the project and his government would not go ahead with it, blaming Lingiari MP Marion Scrymgour for the delay.

"There's been a campaign launched by Marion Scrymgour since the election … she wants the gallery moved to Desert Knowledge, h

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